4.7 Article

Validation of Recombinant Chicken Liver Bile Acid Binding Protein as a Tool for Cholic Acid Hosting

期刊

BIOMOLECULES
卷 11, 期 5, 页码 -

出版社

MDPI
DOI: 10.3390/biom11050645

关键词

fatty acid-binding protein; chicken liver bile acid-binding protein; bile acids; cholic acid; X-ray crystallography; high-resolution crystal structure

资金

  1. MIUR Grant Dipartimento di Eccellenza [2018-2022]

向作者/读者索取更多资源

Bile acids are hydroxylated steroids derived from cholesterol that facilitate nutrient absorption and act as signaling molecules, while bile acid-binding proteins mediate their trafficking in the liver, making them suitable for distributing various substances. Recombinant chicken liver BABP shows potential for drug carriers, nanotechnologies, and synthetic photoswitch systems after an efficient production, purification, and crystallization process. The study supports the use of recombinant cL-BABP for innovative applications in drug delivery and technology development.
Bile acids (BAs) are hydroxylated steroids derived from cholesterol that act at the intestinal level to facilitate the absorption of several nutrients and also play a role as signaling molecules. In the liver of various vertebrates, the trafficking of BAs is mediated by bile acid-binding proteins (L-BABPs). The ability to host hydrophobic or amphipathic molecules makes BABPs suitable for the distribution of a variety of physiological and exogenous substances. Thus, BABPs have been proposed as drug carriers, and more recently, they have also been employed to develop innovative nanotechnology and biotechnology systems. Here, we report an efficient protocol for the production, purification, and crystallization of chicken liver BABP (cL-BABP). By means of target expression as His(6)-tag cL-BABP, we obtained a large amount of pure and homogeneous proteins through a simple purification procedure relying on affinity chromatography. The recombinant cL-BABP showed a raised propensity to crystallize, allowing us to obtain its structure at high resolution and, in turn, assess the structural conservation of the recombinant cL-BABP with respect to the liver-extracted protein. The results support the use of recombinant cL-BABP for the development of drug carriers, nanotechnologies, and innovative synthetic photoswitch systems.

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